1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
riadik2000 [5.3K]
3 years ago
7

(b) Out of 200 students in an examination of class IX, 140 passed in Maths, 120 passed in Scien

Mathematics
2 answers:
Elanso [62]3 years ago
5 0

Answer:

P(A)= probability of who passed maths

=140/200

P(B)= probability of who passed Sci

= 120/200

P(A&B)=(140+120-200+40)/200

P(A|B)'=40/200

iren [92.7K]3 years ago
3 0

Answer:

n(U)=200

n(M)=140

n(S)=120

n(MuS)complement=40

n(MuS)=n(U)-n(MuS)complement

=200-40

=160

n(MnS)=n(M)+n(S)-n(MuS)

=140+120-160

=260-160

=100

You might be interested in
So in the thing p=m/v to find m would you times v by p?
EastWind [94]

M = mass

p = density

v = volume

Yes, to find m it would be m = pv.

To find v that would be m/p.

8 0
3 years ago
There is a bag with only red marbles and blue marbles.
mote1985 [20]

Answer:

red marbles

Step-by-step explanation:

Since the formula is;

Probability = number of required outcome

_______________________

number of possible outcome

3/8. = x/56

8x. = 168

x. 21 ( number of blue marbles)

Therefore if the total marbles = 56 and 21 of the marbles are blue then to get the red marbles

= 56 - 21

= 35

3 0
3 years ago
from the edge of a cliff 180m high, the angles of depression of two boats at sea are 43° and 52° respectively what is the distan
MrRa [10]

tan 52 = 180/a; a = 180/tan 52

tan 43 = 180/b; b = 180/tan 43

you need to calculate, a-b = 180/tan 52 - 180/tan 43

substitute the value of tan thetas, and calculate it simply...


8 0
3 years ago
What is the circumference of a circle whose area is 121 pi square meters?
Contact [7]
I hope this helps you

5 0
3 years ago
Which of the following is an example of discrete data?
ahrayia [7]

Answer:

D- the number of times you get heads when you flip a coin 100 times

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • All rectangles are _____.<br><br> parallelograms<br> rhombuses<br> squares<br> quadrilaterals
    6·1 answer
  • What is the smallest number of squares into which you can divide a rectangle with dimensions 6×7?
    15·1 answer
  • Tom keeps all of his favorite marbles in a special leather bag. right know five red marbles four marbles and three marbles are i
    7·1 answer
  • What equals 29 in multiplation
    15·1 answer
  • What percent is equivalent to 2.5
    12·1 answer
  • Finding missing angle khan academy
    9·1 answer
  • 1. A farmer is planting a 47-acre field of green beans. How many seeds must be purchased if the farmer plants 140,000 seeds per
    11·1 answer
  • 10. Melissa and Kaylee are playing a game.
    7·1 answer
  • There is a circle inscribed in an equilateral triangle, and there is another equilateral triangle inscribed in the circle. The r
    14·1 answer
  • Let f(x) = xe−x if x ≥ 0 and f(x) = 0 if x &lt; 0<br> Is f a probability density function?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!